Multilayer coating for a component

Abstract

A multilayer coating for a metallic surface of a component is provided. The multilayer coating includes a first coating having a metal nitride. The first coating at least partially overlaps the metallic surface. The multilayer coating also includes a second coating having a metal. The second coating at least partially overlaps the first coating. The multilayer coating further includes a third coating having a Diamond Like Carbon (DLC) material. The third coating at least partially overlaps the second coating. The first coating, the second coating, and the third coating differ from one another with respect to at least one of hardness, elasticity, corrosion resistance, and lubricity. The multilayer coating includes at least ten overlapping layers having successive layers of the first coating, the second coating, and the third coating in repeating sequence.

What is claimed is: 
     
         1 . A multilayer coating for a metallic surface of a component, the multilayer coating comprising:
 a first coating including a metal nitride, wherein the first coating at least partially overlaps the metallic surface;   a second coating including a metal, wherein the second coating at least partially overlaps the first coating; and   a third coating including a Diamond Like Carbon (DLC) material, wherein the third coating at least partially overlaps the second coating, wherein the first coating, the second coating, and the third coating differ from one another with respect to at least one of hardness, elasticity, corrosion resistance, and lubricity, and   wherein the multilayer coating includes at least ten overlapping layers having successive layers of the first coating, the second coating, and the third coating in repeating sequence.